Description

1) Quick Comparison: Reversible vs Backdraft Damper

Choose the version that matches your ventilation goal. If you need both intake and exhaust, pick Reversible Airflow. If you only need one-way exhaust and want to reduce backflow, pick Backdraft Damper.

Item	Reversible Airflow Version	Backdraft Damper Version
Airflow direction	Reversible (Intake ↔ Exhaust)	Exhaust-only
Backdraft damper	No	Yes (helps prevent backflow; helps block insects)
Best for	Rooms that need fresh-air intake and exhaust flexibility	Bathrooms/kitchens/garages where one-way exhaust is preferred
Control	Remote control (version-dependent)	Remote control or wall switch (version-dependent)
Speed control	5-stage variable speed	5-stage variable speed
Motor	EC motor	EC motor
Noise	Low-noise operation	Low-noise operation
Power (same size comparison)	Higher power (see model table)	Lower power (see model table)

2) Shared Specifications

These specifications apply to both versions (Reversible Airflow and Backdraft Damper):

Shared Item	Specification
Brand	KCVENTS
Installation	Wall / Window mounting (wall-mounted)
Application	Hotel, Industrial, RV, Garage, Household
Function	Exhaust ventilation (with version-specific airflow direction)
Housing material	Plastic / ABS (ABS housing on reversible version icons)
Motor type	EC motor (energy-saving)
Speed control	5-stage speed regulation
Noise level	≤ 40 dB
App control	No
Operating language	English
Warranty	3 years
Origin	Guangdong, China
Customization	Logo/graphic customization: 3D printing

3) Model Tables for Order Confirmation

Use the tables below to confirm the exact model you’re selecting (size, power, airflow, and version).

A) Reversible Airflow Models (Reversible Direction)

Model	Size (inch)	Voltage	EC Motor Power (W)	Airflow (m³/h)	Notes
APC10-J-Reversible	4″	80–245V, 50–60Hz	10W	100	Reversible airflow; 70-second automatic cycle; 5-stage speed control
APC15-J-Reversible	6″	80–245V, 50–60Hz	10W	230	Reversible airflow; 70-second automatic cycle; 5-stage speed control

B) Backdraft Damper Models (Exhaust-Only + Anti-Backflow)

Model	Size (inch)	Voltage	EC Motor Power (W)	Airflow (m³/h)	Notes
APC10-J	4″	220V	4W	90	Exhaust-only; Backdraft Damper
APC15-J	6″	(not provided)	5W	180	Exhaust-only; Backdraft Damper

🌬️ Standard Version (e.g., APC-C-EC / Thermostatic Quiet / Wired Switch)

✅ Main Function: One-way exhaust

🏠 Removes indoor air containing odors, humidity, smoke, or pollutants
🚪 Expels indoor air outdoors to improve indoor air quality
💨 Think of it as a one-way “air transporter”: it only pushes indoor air out
🍳 Example: After cooking, it can remove cooking fumes and smoke, but cannot bring fresh outdoor air in

🔄 Reversible Version (e.g., APC-C-EC / Reversible Model)

✅ Main Function: Bidirectional airflow (Exhaust & Intake)

🏠 Expels indoor polluted air like the standard version
🌿 Can reverse to bring fresh outdoor air indoors for two-way circulation
💨 Example: When indoor air feels stuffy, switch to reverse mode to bring in fresh air
🔄 Normal mode still works as standard exhaust to remove indoor waste air

💡 Tips for Users:

Perfect for kitchens, bathrooms, or any indoor space needing air quality improvement
Reversible version provides flexible ventilation, improving both air freshness and comfort

🔹 Additional Notes:

Ideal for wall or window installation
Suitable for residential, commercial, or industrial ventilation
Reversible model enhances indoor air circulation flexibility

Additional information

size: APC10-J 4 inch	APC10-J 4 inch, APC15-J 6 inch
version: Exhaust Only + on-off (Backdraft Damper)	Exhaust Only + on-off (Backdraft Damper), Exhaust Only + Remote (Backdraft Damper), Reversible + Remote (No Damper)
plug-type: EU	AU, EU, UK, US

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Wall Mount Exhaust Fan with Remote,KCvents 4/6” Reversible Airflow or Backdraft Damper

Description